Radiator.



W. ANDREWS.

' RADIATOR.

APPLICATION FILED JAN. 29, 1908.

Patented July 2'7, 1909/ W1 M 4 4 2 50 r27 64-5 V \II i I mnzvl, a mumsca, Pnommnoeums. WASHINGM w c.

RADIATOR.

Specification of Letters Patent.

Patented July 2'7, 1909.

Application filed January 29, 1908. Serial No. 418,245.

To all whom it may concern:

Be it known that I, WILLIAM ANDREWS, a citizen ofthe United States,residing at Brooklyn, New York, have invented certain new and usefulImprovements in Radiators, of which the following is a clear, full, andexact description.

The object of this invention is to improve the construction of singleline steam radiators so that a regulation of their temperature may bereadily efiected to secure the maximum heating capacity of the radiator,or its heating to a less degree without throttling the steam supply.

A further object is to enable such regulation to be effected in a giventype of radiator, i. c. single line radiator, so that hammer in thepipes will not be prevalent therein.

In carrying out this invention, I make use of the principle set forthand described in my United States patent, dated October 22nd, 1907, No.869,042. The broad principle as shown in that patent for the regulationof a double line steam system, is to cause those units of the radiatorwhich are not to be heated to fill up with air, which is always carriedby the steam in a system, and thus be rendered non-productive of heat.When it is desired to employ the entire heating surface of the radiator,the air is let out of all the units and the steam allowed to occupy theentire area of the radiator. In order to prevent water hammer inchanging from no heat to full heat, or partial heat; or vice versa, Imake use of a double branch to the radiator from the supply pipe, one ofwhich branches I locate in the lowermost portion of one of the radiatorunits, so that a drainage may be formed for the water that may collect.

The scope of my invention will be pointed out in the claim.

In the accompanying drawings, Figure 1 is a side elevation, partly insection of a radiator constructed according to this invention. Fig. 2 isa transverse vertical section. of the regulating valves of the samedrawn to an enlarged scale.

As shown in the accompanying drawings, the regulator is composed of theusual hollow units or chambers 1, connected by ferrules 2 and providedwith a steam pipe 3, globe valve 4. From the globe valve a pipe 5 leadsto one of the sections of the radiator, preferably other than the firstsection of the same, opening into such section or unit at its lowestlevel. A branch pipe 6 leads to the first unit of the radiator at ahigher level than the pipe 5 in the usual manner. To any one of theunits I apply the following valve mechanism to secure the regulatingcontrol, which I have shown in the drawings as applied to the lastsection, that is, the one farthest from the steam entrance: It consistsof a shut-01f valve 7 provided with a handle 8 5 the valve is adapted tobe screwed into the unit of the radiator, and on its farther side fromthe radiator I afIiX to the shutoff valve an automatic air release valveof any type well known in the art. I have shown herein an automaticvalve 9 as provided with a casing having an outlet 10, with a valve bodyllwithin the casing, and an adjusting lug 12 for regulating the positionof the va ve body 11. This valve body is made of a material as is commonin the art, which will expand when heated, and in expanding, close theentrance to the valve casing from the passage 13 of the cut-off valve 7.

When it is desired to have the entire radiator heated, the cut-oil valveis turned as shown in Fig. 2, when all air that is in the radiator willpass through the automatic valve and out into the roomuntil steam or hotwater or heated air comes into contact with the valve body 11, andexpands the same when, as is usual in such valves, the outlet will beclosed. If it is desired to have but half the radiator active, thecut-01f valve 7 is closed so as to make in-active the automatic valvewhen the air held by the steam will gradually accumulate in the righthand units shown in the drawings, and those units will cease radiatingheat, remain cool, and all the heat from the radiator will be radiatedfrom the left hand units of the same. When it is desired to heat theentire radiator, the cutoil valve needonly be turned to put intooperation the automatic valve when all air in the system will filter outthrough the automatic valve, and the entire radiator become heated. Allwater of condensation will readily pass off through the pipe 5 withoutproducing any annoying hammering.

It will be obvious that a considerable condensation will take place whenthe hot steam from the hot portions reaches the portions which havebefore been kept cool, and at such times it is necessary to preventwater hammer, although at all times it is advisable to do so. The airwhich accumulates in the top of the units is always colder than thesteam,

and consequently falls to the lower portion of the units, being replacedby steam, and being forced out through the automatic valve at the rightof the apparatus. The most effective position for automatic valve andcut-ofl' would therefore be at the base of the radiator, but inpractice, I have found it unsafe to place it there, as careless personsare apt to step on the same, and break it. In practice, it workspractically as well as indicated, at the top of the section, or unit,fartherrnost from the steam inlet.

I claim as my invention:

A radiator of the type described, having a plurality of chambers 1, asingle steam supply pipe 3, a valve 4 therefor, a double branch passagefrom said steam inlet to the radiator, one branch of which communicateswith an end radiator unit 1 a distance from its bot.-. tom, the otherbranch of which communicates with a radiator unit 1, intermediate of theends of the radiator, and near the steam inlet, and at the lowest pointof said unit, said second branch communicating with a different unitthan is communicated with by the first branch.

Signed at New York city this 28th day of January, 1908.

WVILLIAM ANDREWS. Witnesses F. WARREN WRIGHT, MABEL DITTENHOEFER.

